Manifold for redox flow battery for reducing shunt current and redox flow battery comprising same

Patent metadata

Field	Value
Publication number	US-9653746-B2
Application number	US-201314417895-A
Country	US
Kind code	B2
Filing date	Jan 25, 2013
Priority date	Aug 28, 2012
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A manifold for a redox flow battery capable of effectively suppressing a shunt current has a supply flow pathway and an exhaust flow pathway respectively formed at a left side and a right side of an anode or cathode electrode electrolyte reaction unit so as to include a U-shaped curved portion, and the U-shaped curved portion is formed to be positioned on the upper part of the top or the lower part of the bottom of the first electrode electrolyte reaction unit. When the manifold is applied to a redox flow battery, the supply flow pathway and the exhaust flow pathway having the U-shaped curved portion are formed on the upper part of the top or the lower part of the bottom of the electrode electrolyte reaction unit to prevent an electrolyte existing in the inside of a stack and a pipe from passing through the U-shaped curved portion.

First claim

The invention claimed is:

1. A manifold for a redox flow battery, comprising:
a first electrode electrolyte reactor installed in a vertical direction, the first electrode electrolyte reactor having a top end portion, a bottom end portion, a left side end portion and a right side end portion;
a first electrode electrolyte inlet formed at a position lower than the bottom end portion;
a supplying flow path for supplying a first electrode electrolyte into the first electrode electrolyte reactor, one end of the supplying flow path being connected to the first electrode electrolyte inlet and the other end thereof being connected to the bottom end portion, wherein the supplying flow path includes an upper U-bend formed at a position higher than the top end portion, a first supplying flow path extending from the one end of the supplying flow path to the upper U-bend, and a second supplying flow path extending from the upper U-bend to the other end of the supplying flow path;
a first electrode electrolyte outlet formed at a position higher than the top end portion; and
an exhausting flow path for exhausting the first electrode electrolyte from the first electrode electrolyte reactor, one end of the exhausting flow path being connected to the first electrolyte outlet and the other end thereof being connected to the top end portion, wherein the exhausting flow path includes a lower U-bend formed at a position lower than the bottom end portion, a first exhausting flow path extending from the one end of the exhausting flow path to the lower U-bend, and a second exhausting flow path extending from the lower U-bend to the other end of the exhausting flow path.

2. The manifold for a redox flow battery according to claim 1 , wherein the first electrode electrolyte inlet is formed at a lower left portion of the first electrode electrolyte reactor, and the upper U-bend is formed at an upper left portion of the first electrode electrolyte reactor, and
wherein the first electrode electrolyte outlet is being formed at an upper right portion of the first electrode electrolyte reactor, and the lower U-bend is formed at a lower right portion of the first electrode electrolyte reactor.

3. The manifold for a redox flow battery according to claim 1 , wherein the first electrode electrolyte inlet is formed at a lower right portion of the first electrode electrolyte reactor, and the upper U-bend is formed at an upper right portion of the first electrode electrolyte reactor, and
wherein the first electrode electrolyte outlet is being formed at an upper left portion of the first electrode electrolyte reactor, and the lower U-bend is formed at a lower left portion of the first electrode electrolyte reactor.

4. The manifold for a redox flow battery according to claim 1 , wherein a felt electrode is attached to the first electrode electrolyte reactor.

5. The manifold for a redox flow battery according to claim 1 , wherein the first electrode electrolyte reactor is formed by forming a groove or a hole in a plate, and a felt electrode is inserted and fixed in the groove or the hole.

6. The manifold for a redox flow battery according to claim 5 , wherein the first electrode electrolyte reactor, the supplying flow path, and the exhausting flow path are formed on one side of the plate, and a bipolar plate is attached to a backside thereof.

7. The manifold for a redox flow battery according to claim 6 , wherein the bipolar plate is inserted into a backside groove formed on a backside surface of the plate, and the bipolar plate has a larger area than the first electrode electrolyte reactor.

8. The manifold for a redox flow battery according to claim 1 , wherein the first electrode electrolyte is a positive electrolyte or a negative electrolyte, which is an opposite polarity of the first electrode electrolyte.

9. A redox flow battery comprising a manifold according to claim 1 .

Assignees

• Korea Energy Research Inst

Inventors

• Jin Chang-Soo
• Jeon Jae-Deok
• Lee Bum-Suk
• Shim Joonmok
• Shin Kyoung-Hee
• Park Sea-Couk
• Jeon Myung Seok
• Jung Kyu-Nam
• Yeon Sun-Hwa
• Yoon Sukeun

Classifications

• Y02E60/50

  Fuel cells · CPC title

• H01M8/026

  characterised by grooves, e.g. their pitch or depth · CPC title

• H01M8/0258

  characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant · CPC title

• Y02E60/528

  Cross-Sectional Technologies · mapped topic

• H01M8/20

  Indirect fuel cells, e.g. fuel cells with redox couple being irreversible (H01M8/18 takes precedence) · CPC title